Spool.



J. G. HOFFMAN.

SPOOL.

APPLICATION FILED 001*. 13, 1913.

Patented Oct. 13, 1914.

v INVENTOR .Jaep/e CT [Yo/finall- WITNESSES ATTORNEYS J'OSEPH C.HOFFMANQ'OE NEW YORK, N. Y.

erect.

Specification of Letters latent.

Patented Oct. 13, 1914.

Application filed October 13, 1913. Serial No. 794,843 I To all whom itmay concern Be it known that I, JOSEPH C. HOFFMAN, a citizen of theUnited States, and a resident of New York, borough of Bronx, in thecounty of Bronx and State of New York,

- have invented a new and Improved Spool,

of which the following is a full, clear, and

I exact description.

The invention relates to spools, and has reference more particularly tospools made of pastebo-ard; and the object thereof is to provide asimple, strong and inexpensive spool in which the flanges and thecentral tubular. portion of the spool are rigidly connected. I obtainthe above object" by providing a tubular member and flanges having thecentral opening substantially equal to the bore of the-tubular member,each of the flanges being secured to the tubular member by means of amember fitting tightly into the opening of the flange and the bore.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which like characters indicate correspondingparts in all the views and in which: 7

Figure 1 is a perspective view of an embodiment of my invention; Fig. 2is an end view of the same; and Fig. 3 is a section on line 3-3, Fig. 2.

Referring to the drawings, 5 represents a tubular member, preferably ofpasteboard, to the ends of which are connected flanges 6 of similarmaterial by means of metallic.

tubular members .7. The central opening 8 of the flanges 6 is ofsubstantially the same diameter as the bore of the tubular member 5 andthe exterior diameter of the tubular member 7, whereby said member 7 ismade to fit tightly into the opening 8 and the bore of tubular member 5.The metallic tubular member 7 which binds the flange t} to the tubularmember 5 has at its outer end a lateral flanged portion 9 which drawsthe flange 6 to the tubular member 5 when the metallic tubular member 7is made to engage the opening 8 and the bore of the pasteboard tube 5,as shown in Fig. 3. To prevent the rotation of the metallic tubularmembers 7 in the bore of the tube 5 and bind the same to it, theexterior lateral surface of the tubular member 7 is provided with a pairof parallel, circular grooves 10, and the surface between the saidgrooves is knurled so as to interconnect said grooves,

whereby the adhesive material with whibh the metallic member 7 iscovered previous to itsdnsertion into the bore of the tube 5 receives asupport and binds the tubular member 5 to the metallic member 7.

The lateral flanged portion 9 of the metal- 110 tubular member 7 has itsfaces waved,

'this being the result of the stampingof the tubular member 7 occasionedby the drawmg out of the cylindrical portion from a disk, of which theflanged portion 9 is the remainder, Due to the same cause, the edge 11of the flanged portion 9 is unequally disposed from the axis of thetubular member 7; and this feature is utilized as will appearherei-nafter. In view of the fact that the flanged portion 9 has a wavysurface,

the adhesive material placed between the outer face of the flange 6 andthe inner surface of the flange portion 9 will have a hold, due to theunevenness of the flange 9, and bind the flanged portion 9 to thepasteboard flange 6. This binding will prevent the rotation of theflange 6 the metallic tubular member 7, which, furthermore, will beresisted by the unevenness of the edges 11, as

previously described. The opposite or inner edge of the tubular member 7is preferably reinforced by means of an end wall 12 having a centralaperture 13. The reinforced wall or bottom 12 of the tubular member ispreferably formed integrally with the tubular member 7 and flange 9. Forvery small spools the metallic member 7 can be formed without thereinforcing wall 12, if desired.

From the above it can be seen that the metallic member 7 has the shapeof a cup having at the open end a lateral flange, so that the connectionbetween the paste-board tube 5 and the flange 6 of similar material isobtained by'a metallic cup, the flanged portion of which prevents themovement of the flanges away from the tubular member; and the tubularmember forms an abutment for said flanges on said cup and prevents theirmovement toward each other. As shown, each of the flanges is mounted ona .cup in contact with the flanged portion 9 of the same; and,similarly, the end of the tubular member is mounted on the cup so as toabut against the flange 6, and, therefore, force the flange 6 againstthe flanged portion of the cup.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a spool, the combination of a paste -to the bore of the tube, withmetallic tubular members, each havmg a lateral flanged portion, each ofsaid tubular members fitting tightly into the opening of each of theflanges and said bore of the pasteboard-tube, said metallic tubularmembers having means forming an anchor for adhesive material to securethe tubular members to the pasteboard tube, with said flanged portion ofeach of the metallic members contacting with the pasteboard flange.

2. In a spool, a tubular member; flanges having a central openingsubstantially equal to the bore of the tubular member; and a cup adaptedto fit into each end of the bore of the tubular member and engage thecentral opening of each of the flanges and whereby said flanges aresecured to the tubular member, each of said cups having means on thelateral surface thereof forming an anchor for adhesive material, wherebysaid cups are secured to said tubular member. Y

3. In a spool, a tubular member; flanges having a central openingsubstantially equal to the bore of the tubular member; a flanged cup foreach end of said tubular member fitting snugly into the bore of the sameand in the central openings of said flanges and whereby each of saidflanges is secured to the opposite ends of the said tube, each of saidcups having grooves in the lateral surface thereof formin an anchor forthe adhesive material whereby the cups are secured to the tubularmember.

4. In a spool, a tubular member; a flange ateach end of said tubularmember, each of the flanges having a central opening substantially equalto the bore of the tube; a flanged cup securing each flange to thetubular member by tightly engaging the flanges opening, and the bore ofthe tube with the flanged portion of said cup against the face of theflange, said cup having in its lateral surface a pair of circulargrooves and a knurled portion between said grooves,thereby forming ananchor for adhesive material to secure said cup to the tubular member.

5. In a spool, a tubular member; a flange at each end of said tubularmember, each of said flanges having a central opening substantiallyequal to the bore of the tube; a flanged cup securing each flange to thetube,

each of said cups comprising a cylindrical portion adapted to fit snuglyinto the bore of the tube and the openings of the flanges, saidcylindrical portion having means forming an anchor for adhesive materialto secure the cup to the tube, the flanged portion of said cups having awavy surface forming an anchor for adhesive material, whereby the cup issecured to the flange.

6. In a spool a tubular member a flange at each end of said tubularmember, said flanges and tubular member having substantially equalbores; a cup securing each of the flanges to the tubular member, saidcup comprising a cylindrical portion fitting snugly into the bores ofsaid flanges and tube and having on its lateral surface two parallelcircular grooves and a knurledportion between said grooves, said knurledsurface and grooves forming an anchor for an adhesive substance wherebythe cup is secured in the tube, said cup having also a lateral flangedportion, the surface of which is wavy, thereby forming an anchor for anadhesive substance to secure the flange to the cup.

7;In a spool, a tubular member; a flange at each end of said tubularmember, said flanges and tube havingsubstantially equal bores; a onsecuring each flange to the tube, the said cup having a polygonallateral flange the surface of w ich is wavy, thereby forming an anchorfor adhesive material and whereby said flanges are connected to saidcups, each cup having also on the lateral surface thereof .a pair ofparallel circular grooves and a knurled portion between said groovesestablishing connection between said grooves, said grooves and knurledportion forming an anchor for adhesive material whereby said cups aresecured to said tube.

8. In a spool, a tubular member; a flange at each end of said tubularmember, said flanges and tube having substantially equal bores; anapertured cup securing each flange to the tube of said cup comprising acylindrical portion having a knurled portion fitting tightly into thebore of the tube and whereby the tube is secured to the cup, each ofsaid cups having also a lateral flange at the open end adapted to beforced into the flange, the edge of said flange of each cup being of apolygonal shape and the surface of the same being wavy, whereby saidflanges are prevented from rotation on said cups and secured to thesame.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEPH C. HOFFMAN.

Witnesses:

BENEDICT Jor'rn, PmLn- D. ROLLHAUS.

